Wehrli

Stage 1 upgrade for the 2020-2025 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo s...

This Billet Aluminum Beadroll Adapter Flange connects to the outlet (passenger / cold) side of the Intercooler. Adapts the OE slip/clip ring assemb...

High flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on the 202...

High flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on the 202...

High flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on the 202...

High flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts on the 202...

The OEM diameter and we experienced a 25HP Gain with our 4 in. turbo inlet when used with a Max Effort Tune. High quality hardware, silicone boot, ...

2020-2025 Silverado and Sierra 2500HD / 3500HD CNC machined billet aluminum spacer kits from WCFab move the front bumper forward off the frame horn...

The Top Outlet Billet Thermostat Housing and Upper Coolant Pipe Kit for 2006-2010 LBZ/LMM Duramax replaces the OEM upper radiator hose that normall...

The Top Outlet Billet Thermostat Housing and Upper Coolant Pipe Kit for 2006-2010 LBZ/LMM Duramax replaces the OEM upper radiator hose that normall...

The OEM diameter and we experienced a 25HP Gain with our 4 in. turbo inlet when used with a Max Effort Tune. High quality hardware, silicone boot, ...

The OEM diameter and we experienced a 25HP Gain with our 4 in. turbo inlet when used with a Max Effort Tune. High quality hardware, silicone boot, ...

2020-2025 L5P Duramax Fabricated Aluminum Coolant Tank Kit, mounts in OEM coolant tank location. - - Dress up your engine bay by replacing the ugly...

The OEM diameter and we experienced a 25HP Gain with our 4 in. turbo inlet when used with a Max Effort Tune. High quality hardware, silicone boot, ...

2020-2025 L5P Duramax Fabricated Aluminum Coolant Tank Kit, mounts in OEM coolant tank location. - - Dress up your engine bay by replacing the ugly...

WCFab 2011-2016 GM LML 6.6L Duramax 4" Intake Kit with Air Box. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filt...

Clean up the engine bay of your 2001-2025 Chevy Silverado or GMC Sierra 2500 / 3500 6.6L truck equipped with the 6.6L Duramax with this Billet Alum...

WCFab's 4" High flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts...

Upper Coolant Pipe for 2020-2025 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 truck replaces the ugly OEM rubber upper r...

Upper Coolant Pipe for 2020-2025 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 truck replaces the ugly OEM rubber upper r...

WCFab 2011-2016 GM LML 6.6L Duramax 4" Intake Kit with Air Box. This high flow, fabricated aluminum intake pipe and air box enclosure with dry filt...

Built in house at WCFab our traction bar brackets bolt on to the bottom of the axle tube via the axle u-bolts and weld to the frame on the front en...

Built in house at WCFab our traction bar brackets bolt on to the bottom of the axle tube via the axle u-bolts and weld to the frame on the front en...

Built in house at WCFab our traction bar brackets bolt on to the bottom of the axle tube via the axle u-bolts and weld to the frame on the front en...

For use on tuned 2017-2023 L5P Duramax competition trucks equipped with VGT Style Turbochargers. Easy to install blanket keeps heat inside the turb...

The WCFab L5P 4 in. High Flow Cast Aluminum Turbo Intake Horn for 2017-2025 Chevrolet Silverado or GMC 2500 / 3500 HD trucks equipped with the 6.6L...

The WCFab L5P 4 in. High Flow Cast Aluminum Turbo Intake Horn for 2017-2025 Chevrolet Silverado or GMC 2500 / 3500 HD trucks equipped with the 6.6L...

The WCFab L5P 4 in. High Flow Cast Aluminum Turbo Intake Horn for 2017-2025 Chevrolet Silverado or GMC 2500 / 3500 HD trucks equipped with the 6.6L...

The WCFab L5P 4 in. High Flow Cast Aluminum Turbo Intake Horn for 2017-2025 Chevrolet Silverado or GMC 2500 / 3500 HD trucks equipped with the 6.6L...

Aluminum Upper Coolant Pipe for 2017-2019 L5P Duramax replaces the OEM rubber upper coolant hose and comes powder coated color of choice! Replaces ...

Aluminum Upper Coolant Pipe for 2017-2019 L5P Duramax replaces the OEM rubber upper coolant hose and comes powder coated color of choice! Replaces ...

Reduce under hood temps, increase turbocharger efficiency and clean up the engine bay on your 2004.5-2016 Chevrolet Silverado or GMC Sierra 2500 / ...

Stage 1 upgrade for the 2017-2019 L5P Duramax improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo s...

WCFab 3" High Flow Driver (Hot) Side Intercooler pipe for the 2017-2019 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD ...

WCFab 3" High Flow Driver (Hot) Side Intercooler pipe for the 2017-2019 L5P 6.6L Duramax equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD ...

Replace the restrictive crushed factory down pipe on your 2015.5-2016 LML Duramax with this full 3" Stainless steel down pipe. For use with factory...

Replace the restrictive crushed factory down pipe on your 2011-2016 LML Duramax with this full 3" Stainless Steel down pipe. For use with factory t...

Replace the restrictive crushed factory turbo down pipe / exhaust front pipe on the 6.6L Duramax Diesel V8 found in the 2004.5 - 2010 Chevrolet Sil...

WCFab's 4" High flow, fabricated aluminum intake pipe and air box enclosure with dry filter assembly replaces the restrictive plastic factory parts...

Aluminum Upper Coolant Pipe for 2011-2016 LML Duramax replaces the OEM rubber upper coolant hose and comes powder coated color of choice! For use w...

Aluminum Upper Coolant Pipe for 2011-2016 LML Duramax replaces the OEM rubber upper coolant hose and comes powder coated color of choice! For use w...

Aluminum Upper Coolant Pipe for 2011-2016 LML Duramax replaces the OEM rubber upper coolant hose and comes powder coated color of choice! For use w...

The 3.5" High Flow Passenger Side Intercooler Pipe for 2011-2016 LML Duramax replaces the factory plastic two-piece pipe with a high flow, 14 ga. a...

The 3.5" High Flow Passenger Side Intercooler Pipe for 2011-2016 LML Duramax replaces the factory plastic two-piece pipe with a high flow, 14 ga. a...

Replace the lightweight 16G, leak-prone passenger side OEM up pipe in your 2001-2004 6.6L LB7 Duramax with this heavy-duty 11 gauge 2" Stainless up...

Replace the lightweight 16G, leak-prone Driver side OEM up pipe with this heavy-duty 11 gauge 2" Stainless up pipe. HD Stainless Bellow that will n...

Replace the lightweight, leak-prone passenger side OEM up pipe with this heavy-duty 11 gauge 2" Stainless up pipe. HD Stainless Bellows that will n...

Fabricated Aluminum Coolant Tank Kit for 2011-2016 6.6L Duramax Diesel equipped Chevrolet Silverado or GMC Sierra 2500 / 3500 HD truck. Mounts in O...